I have tried __________ to make the General Manger change his mind.

A. will be finishing B. will have been finishing

C. would finish D. will have finished

A. tiring and wear out B. tiring and worn out

C. tired and worn out D. tiring and wearing out

A. as if B. even though

C. even as D. as long as

A. the students at talk B. some students talked

C. some students talking D. the students to talk

A. in that B. that

C. which D. in which

A. are working B. have been working

C. have been worked D. work

A. Observation B. Observatory

C. Observed D. Observing

A. More medicine taken B.When I take more medicine

C. The more medicine I take D.Taking more of the medicine

A. once a four years B. four years a time

C. for four years D. every four years

A. can we do B. to be done

C. shall we do D. to doing